EDIT2：对于将来有相同问题的人们：问题是，一旦我为for循环声明了all_planets变量，无论我在for循环中将其更改为什么，它都不会更新。所以我用了while循环而不是for循环：
all_planets = c.driver.find_elements_by_xpath('//*[contains(@class, \'smallplanet\')]')
element_clicking = 0
while element_clicking < len(all_planets):
all_planets = c.driver.find_elements_by_xpath('//*[contains(@class, \'smallplanet\')]')
all_planets[element_clicking].click()
element_clicking += 1
try:
if metalMineLVL() in range(10,15,1):
if roboFabLVL() <(5):
print('Building Robo')
c.roboFab.build()
continue
elif forschLabLVL() <(5):
print('Building Research center')
c.forschLab.build()
continue
elif schWerftLVL() <(5):
print('Building ship bay')
c.schWerft.build()
continue
else:
cycles.buildMinesCycle()
elif metalMineLVL() in range(15, 20, 1):
if roboFabLVL() <(8):
print('Building Robo')
c.roboFab.build()
continue
elif forschLabLVL() <(8):
print('Building Research center')
c.forschLab.build()
continue
elif schWerftLVL() <(8):
print('Building ship bay')
c.schWerft.build()
continue
elif astroTechLVL() < 3:
print('Researching astrological technology')
c.astroTech.build()
elif btnnumKoloLVL() <(1):
print('Building colony ship')
c.btnnumKolo.build(1)
continue
elif spioTechLVL() <(3):
print('Researching spy technology')
c.spioTech.build()
continue
elif btnnumGTLVL() <(3):
print('Building greater tansport ship')
c.btnnumGT.build(1)
continue
elif compTechLVL() <(3):
print('Building researching computing science')
c.compTech.build()
else:
cycles.buildMinesCycle()
elif metalMineLVL() >= (20):
if roboFabLVL() <(10):
print('Building robo')
c.roboFab.build()
continue
elif forschLabLVL() <(10):
print('Building research center')
c.forschLab.build()
continue
elif schWerftLVL() <(10):
print('Building ship bay')
c.schWerft.build()
continue
elif btnnumKoloLVL() <(1):
print('Building colony ship')
c.btnnumKolo.build(1)
continue
elif spioTechLVL() <(8):
print('Researching spy tehcnology')
c.spioTech.build()
continue
elif btnnumGTLVL() <(10):
print('Building greater transport ship')
c.btnnumGT.build(1)
continue
else:
cycles.buildMinesCycle()
else:
cycles.buildMinesCycle()
except Exception:
traceback.print_exc()
return
所以我有这段代码，给了我StaleElementReferenceException。我确实知道为什么得到它（首先我搜索具有特定类的所有元素，然后尝试在for循环中循环访问它们，这给了我错误），但是我不知道如何解决问题。这里的代码：
all_planets = c.driver.find_elements_by_xpath('//*[contains(@class, \'smallplanet\')]')
for element in all_planets:
element.click()
//click on some things etc
问题是，一旦程序尝试访问第二个元素，就会引发StaleElement错误。我试图以某种方式重新加载Element，但是我不知道它是如何工作的，例如：
all_planets = c.driver.find_elements_by_xpath('//*[contains(@class, \'smallplanet\')]')
for element in all_planets:
try:
element.click()
//click on some things etc
except:
c.driver.find_elements_by_xpath('//*[contains(@class, \'smallplanet\')]')
element.click()
但是这也不起作用。有没有一种方法可以选择特定的WebElement，然后重新加载该元素？例如：
获取所有Web元素，如果出现staleError，只需重新加载要访问的特定WebElement？
编辑： Okey，所以我试了一下，以某种方式不起作用。我还使用调试器查看了python是否确实执行了该命令，并且看起来确实如此。
这里是实际代码：
all_planets = c.driver.find_elements_by_xpath('//*[contains(@class, \'smallplanet\')]')
for element in all_planets:
element.click()
try:
if metalMineLVL() in range(10,15,1):
if roboFabLVL() <(5):
print('Building Robo')
c.roboFab.build()
continue
elif forschLabLVL() <(5):
print('Building Research center')
c.forschLab.build()
continue
elif schWerftLVL() <(5):
print('Building ship bay')
c.schWerft.build()
continue
else:
cycles.buildMinesCycle()
elif metalMineLVL() in range(15, 20, 1):
if roboFabLVL() <(8):
print('Building Robo')
c.roboFab.build()
continue
elif forschLabLVL() <(8):
print('Building Research center')
c.forschLab.build()
continue
elif schWerftLVL() <(8):
print('Building ship bay')
c.schWerft.build()
continue
elif astroTechLVL() < 3:
print('Researching astrological technology')
c.astroTech.build()
elif btnnumKoloLVL() <(1):
print('Building colony ship')
c.btnnumKolo.build(1)
continue
elif spioTechLVL() <(3):
print('Researching spy technology')
c.spioTech.build()
continue
elif btnnumGTLVL() <(3):
print('Building greater tansport ship')
c.btnnumGT.build(1)
continue
elif compTechLVL() <(3):
print('Building researching computing science')
c.compTech.build()
else:
cycles.buildMinesCycle()
elif metalMineLVL() >= (20):
if roboFabLVL() <(10):
print('Building robo')
c.roboFab.build()
continue
elif forschLabLVL() <(10):
print('Building research center')
c.forschLab.build()
continue
elif schWerftLVL() <(10):
print('Building ship bay')
c.schWerft.build()
continue
elif btnnumKoloLVL() <(1):
print('Building colony ship')
c.btnnumKolo.build(1)
continue
elif spioTechLVL() <(8):
print('Researching spy tehcnology')
c.spioTech.build()
continue
elif btnnumGTLVL() <(10):
print('Building greater transport ship')
c.btnnumGT.build(1)
continue
else:
cycles.buildMinesCycle()
else:
cycles.buildMinesCycle()
except Exception:
traceback.print_exc()
return
finally:
all_planets = c.driver.find_elements_by_xpath('//*[contains(@class, \'smallplanet\')]')
c.time.sleep(1)
错误：
Traceback (most recent call last):
File "C:\Users\leosc\PycharmProjects\ogameBot\guideline.py", line 27, in guideline
element.click()
File "C:\Users\leosc\AppData\Local\Programs\Python\Python37-32\lib\site-packages\selenium\webdriver\remote\webelement.py", line 80, in click
self._execute(Command.CLICK_ELEMENT)
File "C:\Users\leosc\AppData\Local\Programs\Python\Python37-32\lib\site-packages\selenium\webdriver\remote\webelement.py", line 633, in _execute
return self._parent.execute(command, params)
File "C:\Users\leosc\AppData\Local\Programs\Python\Python37-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
self.error_handler.check_response(response)
File "C:\Users\leosc\AppData\Local\Programs\Python\Python37-32\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.StaleElementReferenceException: Message: stale element reference: element is not attached to the page document
(Session info: chrome=72.0.3626.121)
(Driver info: chromedriver=2.46.628402 (536cd7adbad73a3783fdc2cab92ab2ba7ec361e1),platform=Windows NT 10.0.17134 x86_64)